GENERAL SPECIFICATIONS
Efficiency
See table
Isolation voltage
Input to Output
Input to Case
Output to Case
1600 VDC, min.
1000 VDC, min.
1000 VDC, min.
Isolation resistance
10
7
ohms, min
Isolation capacitance
2500 pF, max
Switching frequency
300 KHz, typ
Approvals and standard (Note 5)
IEC60950, UL60950, EN60950
Case material
Open with Aluminum base-plate
Weight
50g (1.76 oz)
MTBF
Bellcore TR-NWT-000332, Tc=40
, Io=80%, max.
3 x 10
6
hrs
ENVIRONMENTAL SPECIFICATIONS
Operating base-plate temperature range (Note 6)
-40ºC to +100ºC
Over temperature protection
110ºC
Humidity max, Non-condensing
95%
Storage temperature range
-55ºC to +125ºC
Thermal shock
MIL-STD-810D
Vibration
10~55Hz, 2G, 3minutes period, 30minutes along X,Y and Z
EMC CHARACTERISTICS
Conducted emissions
EN55022 (Note 7)
EN55022 (Note 7)
Level A
Level B
Radiated emissions
EN55022
Level A
ESD
Radiated immunity
Fast transient
Surge
Conducted immunity
EN61000-4-2
EN61000-4-3
EN61000-4-4
EN61000-4-5
EN61000-4-6
Perf. Criteria2
Perf. Criteria2
Perf. Criteria2
Perf. Criteria2
Perf. Criteria2
OUTPUT SPECIFICATIONS
Output power
50 Watts max
Voltage accuracy Full load and nominal Vin
± 1.5%
Voltage adjustability (Note 1)
+ 10% , -20%
Minimum load
0%
Line regulation LL to HL at FL
See table
Load regulation 0% to 100% FL
See table
Remote sense (Note 1)
10% of Vout
Ripple and noise(Note 2) 20MHz bandwidth
100mVp-p
Temperature coefficient
I
0.02% / ºC, max
Transient response
recovery time
25% load step change
200uS
Over voltage protection threshold (Hiccup)
115% ~ 130% of Vout
Over current protection threshold
110% ~ 140% of Iout Rated
Short circuit protection
Hiccup, automatics recovery
INPUT SPECIFICATIONS
Input voltage range
24V input
48V input
18 – 36VDC
36 – 75VDC
UVLO start-up voltage
24V input
48V input
17V typ.
34V typ.
UVLO shuntdown voltage
24V input
48V input
15V typ.
32V typ.
Input filter (Note 3)
L-C type
Input voltage variation
dv/dt
5V/ms,max
(Complies with ETS300 132 part 4.4)
Input surge voltage 100mS max
24V input
48V input
50VDC
100VDC
Start up time
Nominal Vin and constant
resistive load
25mS typ.
Input reflected-ripple current
(5Hz to 20 MHz, 12uH source impedance)
24V input
48V input
50mAp-p
20mAp-p
Remote ON/OFF(Note 4)
(Positive logic)
(Negative logic)
ON=Open or 3.5V < Vr < 15V, I
IN
=50
max.
OFF=Short or 0V < Vr < 1.2V, I
IN
=1m
max.
ON=Short or 0V < Vr < 1.2V, I
IN
=1m
max.
OFF=Open or 3.5V < Vr < 15V, I
IN
=50
max.
•
SINGLE OUTPUT UP TO 15A
•
INDUSTRY STANDARD FOOTPRINT
•
ADJUSTABLE OUTPUT VOLTAGE
•
NO MINIMUM LOAD
•
UNDER-VOLTAGE LOCKOUT
•
HIGH EFFICIENCY UP TO 91%
•
COMPACT 2.40 X 2.28 X 0.50 INCH PACKAGE
•
FIXED SWITCHING FREQUENCY
•
HALT TESTED
HEC50-S single output DC/DC converters provide up to 50 watts of output power in an
industry standard half-brick package and footprint. These units are specifically
designed to meet the power needs of low-voltage silicon. All models feature a wide
input range, trimmable output voltage and a 15A current rating. Remote sense and
remote on/off facilities are included as standard, and the converters are
comprehensively protected against over-current, over-voltage and over-temperature
conditions. The HEC50 converters are especially suited to telecom, networking and
industrial application.
T E C H N I C A L S P E C I F I C A T I O N
All specifications are typical at nominal input, full load and 25ºC otherwise noted
UL E193009
TUV R50020744
CB JPTUV-5363
CE MARK
Model
Number
Input
Range
Output
Voltage
Output
Current
Line
regulation
Load
regulation
Input
Current
(8)
Eff
(9)
(%)
HEC50-24S1P8
18 – 36 VDC
1.8 VDC
15 A
4 mV
6 mV
1.36 A
86
HEC50-24S2P5
18 – 36 VDC
2.5 VDC
15 A
5 mV
8 mV
1.86 A
87
HEC50-24S3P3
18 – 36 VDC
3.3 VDC
15 A
7 mV
10 mV
2.40 A
89
HEC50-24S05
18 – 36 VDC
5 VDC
10 A
10 mV
15 mV
2.40 A
90
HEC50-24S15
18 – 36 VDC
15 VDC
3.3 A
30 mV
45 mV
2.40 A
89
HEC50-48S1P8
36 – 75 VDC
1.8 VDC
15 A
4 mV
6 mV
0.67 A
87
HEC50-48S2P5
36 – 75 VDC
2.5 VDC
15 A
5 mV
8 mV
0.92 A
89
HEC50-48S3P3
36 – 75 VDC
3.3 VDC
15 A
7 mV
10 mV
1.19 A
90
HEC50-48S05
36 – 75 VDC
5 VDC
10 A
10 mV
15 mV
1.19 A
91
HEC50-48S15
36 – 75 VDC
15 VDC
3.3 A
30 mV
45 mV
1.20 A
90
PRODUCT OPTIONS TABLE
Option Suffix
Negative remote ON/OFF logic, 0.20” pin length (standard)
-
Negative remote ON/OFF logic, 0.145” pin length
-L
Negative remote ON/OFF logic, 0.11” pin length
-K
Positive remote ON/OFF logic, 0.20” pin length
-P
Positive remote ON/OFF logic, 0.145” pin length
-S
Positive remote ON/OFF logic, 0.11” pin length
-M
Note
1. Maximum output deviation is 10% inclusive of remote sense. If remote sense is not being used, the +V sense should be connected to its corresponding
+OUTPUT and likewise the –sense should be connected to its corresponding –OUTPUT.
2. Measured with a 1uF M/C and a 10uF T/C.
3. An external filter capacitor is required for normal operation. The capacitor should be capable of handing 1A ripple current for 48V/24V models. Power
mate suggest: Nippon chemi-con KMF series, 220 F/100V, ESR 90m .
4. The negative/ positive logic and pin length are optional ( see table ). The pin voltage is referenced to negative input.
5. 24V input models safety approval pending.
6. Heat sink is optional and P/N: 7G-0021, 7G-0022, 7G-0023, 7G-0024.
7. The HEC50 meets level A and level B conducted emissions only with external components connected before the input pin to the converter.
8. Maximum value at nominal input voltage and full load.
9. Typical value at nominal input voltage and full load.
10. BASEPLATE GROUNDING
Base-plate should be grounded at one of the four screw bolts prior to operation.
11. The converter is provided by basic insulation.
PIN
Define
1
- INPUT
2
CASE
3
CTRL
4
+ INPUT
5
- OUTPUT
6
- SENSE
Diameter
0.04 Inches
0.04 Inches
0.04 Inches
0.04 Inches
0.08 Inches
0.04 Inches
7
TRIM
0.04 Inches
8
+ SENSE
0.04 Inches
9
+ OUTPUT
0.08 Inches
PIN CONNECTION
7
8
TRIM UP
6
7
TRIM DOWN
Output can be externally trimmed by
using the method shown below.
EXTERNAL OUTPUT TRIMMING
R
U
R
D
Example
HEC50-48S3P3-P
( Note 10 )